I cannot run avi files...

[vineetsharma1503]

I run Windows Xp professional Service pack 3. All worked fine but from some time i noticed that i cannot run avi files and infact any video file. only sound plays and the video's window remains dark. i m sure it is some virus. i do not want to format my pc. plz suggest me a solution

[Bratez]

Please, read the Rules carefully and make logfiles as described in section Analysis.